1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see [sun.com URL with a
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
48 fprintf(stderr, "usage: ./flocks_test on|off -c|-f|-l /path/to/file\n");
52 int main(int argc, char *argv[])
55 int mount_with_flock = 0;
61 if (!strncmp(argv[1], "on", 3)) {
63 } else if (!strncmp(argv[1], "off", 4)) {
69 if ((fd = open(argv[3], O_RDWR)) < 0) {
70 fprintf(stderr, "Couldn't open file: %s\n", argv[2]);
74 if (!strncmp(argv[2], "-c", 3)) {
78 fl.l_whence = SEEK_SET;
82 error = fcntl(fd, F_SETLK, &fl);
83 } else if (!strncmp(argv[2], "-l", 3)) {
84 error = lockf(fd, F_LOCK, 1);
85 } else if (!strncmp(argv[2], "-f", 3)) {
86 error = flock(fd, LOCK_EX);
92 return((error == 0) ? EXIT_SUCCESS : EXIT_FAILURE);
94 return((error == 0) ? EXIT_FAILURE : EXIT_SUCCESS);